Orsay or Oversay, an islet in Kilchoman parish, Argyllshire, at the point of the Rhyms of Islay, flanking the W side of the entrance to Loch Indal, and lying 12 miles NW of the Mull of Islay. It has a lighthouse, erected in 1825 at a cost of £8056, and showing a light which flashes once in every five seconds, and is visible at the distance of 17 nautical miles. Pop. (1871) 13, (l881) 15.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)